That's a very good point suboxide. I wouldn't want that to get in the way of MY rez, for sure. :)
Perhaps the opposite, then - if a food / water foraging system is in place, then different foods and waters enriched with certain nutrients give small bonuses for a period of time. So if you knew you were going on a boss hunt you could stop on the way and pick a certain berry which gives you a small sap boost, long enough for the battle - but if called out for a rez in a hurry, you wouldn't be going at a disadvantage if you hadn't eaten anything.
This may be a better solution than slowing regeneration when hungry, but then again now we're getting away from the OP's intent, which was to implement a survival system / increase immersion. I happen to like immersion and all the cans of worms it opens, but in a game with existing systems like this one it has to be implemented properly.
Perhaps the opposite, then - if a food / water foraging system is in place, then different foods and waters enriched with certain nutrients give small bonuses for a period of time. So if you knew you were going on a boss hunt you could stop on the way and pick a certain berry which gives you a small sap boost, long enough for the battle - but if called out for a rez in a hurry, you wouldn't be going at a disadvantage if you hadn't eaten anything.
This may be a better solution than slowing regeneration when hungry, but then again now we're getting away from the OP's intent, which was to implement a survival system / increase immersion. I happen to like immersion and all the cans of worms it opens, but in a game with existing systems like this one it has to be implemented properly.